Sajidah BMY 3101

Principles of ecology.This chapter has a lot of definition need to be know. Abiotic factor are non living part of enviroments such as temperature water sunlight wind rocks and soil periodic disturbances https://classconnection.s3.amazonaws.com/665/flashcards/2470665/png/abiotic_factor1362439889644.png Homeostasis is dynamic balance of processes,materials and organisms in the ecosytem and biosphere Microbes also have roles in the ecosystems oxygen producer. Half of oxygen produce by blue-green algae in the ocean.I wonder how this algae can produce oxygen?Does it has same process as in tree? fix nitrogen in the atmosphere into usable form recyclers of dead materials source in food chain contribution to evolution:remove weaker species through infections What I  have learn: -Ecology is the systematci study of organisms and their interactions with enviroment -Example of decomposer is fungi -blue-green algae produce oxygen

Microbial group Microbial group based on size of population. The pH require for most bacteria is pH5-9 The pH require for fungi pH 2-9 One of chemical growth requirement is oxygen.Aerobes must have oxygen.Microaerophiles little oxygen.Facultative anaerobe with or without oxygen I wonder if this microbe such as anaerobes is more dangerous than aerobes and why?.Based on my knowledge there are some procedure in medical that when a person get a wound the doctor will do the drain so that more oxygen can get to the wound. The common product of succesion is Biofilm.Form when certain microorganisms adhere to the surface of some object in amoist enviroment and begin to reproduce.There are two types of biofilm that are simple and complex biofilm. What I have learn: -Microbial growth based on size of population -Most fungi require pH 2-9 -Biofilm have two types complex and simple

Sorry for the late update.Previous week we learn about Protozoa.Protozoa is animal-like protist.Protozoa have unique feature of morphology that are: ectoplasm-semisolid or gelatinous cytoplasm under plasma membrane endoplasm-inside ectoplasm,fluid and granular Pelicle-embedded in ectoplasm. Nucleus-1,2 or more identical nucleus,1 macronucleus and 1 micronuclei. Vacoule- contactile, Phagocytosic and secretory I wonder if these unique features of morphology is absent does it impact protozoan life so badly from the perspective of reproduction, and nutrient. Algae Algae is plant like protist.Algae reproduce sexually and asexually.In sexual reproduction there are isogamy and heterogamy. Isogamy produce gametes that identical in shape,size and motility.There are no male and female. Heterogamy produce two different type of gametes.Male gamete usually small while female gamete is much larger. http://biostudy4u.com/wp-content/uploads/2012/11/algae_reporduction-300x150

8/5/15 We do a quiz about prokaryotes today.This quiz was answered in group.There are only four group that participate in this quiz because there are many student that are absent today so all the student that present is divided into four group.This quiz help me to remember back what I have learn last semester and also applied the knowledge that I have learn on the question that we have not study yet. What I have learn: -Strong enzyme need to degrade envelope -The component of envelope is different for gram negative and positive bacteria and archae. -Chitin responsible for asma in human.

6/5/15 Today we continue learning about Bacteria.The lesson continue from where we end last week. We study about Gram negative bacteria with cell wall.Some of them are non phototrophic which not pathogenic such as Pseudomonas sp. that degrade complex organic molecules in soil.This microbe is important for plant growth.I wonder will the plant able to grow if this microbes are absent? There are also Phototrophic gram negative bacteria with cell wall that are Anoxygenic  and oxygenic.Example of Anoxygenic bacteria is Rhodospirillum that can be found in water and also known as purple non sulphur bacteria.Anoxygenic bacteria do not have chlorophyll but have bacteriachlorophyll Next category is gram positive bacteria with cell walls that contain 6 groups.One of the group is Mycobacteria. Mycobacteria tubercolosis is one of the example.This bacteria become interesting to know more because there are attemps to revive this bacteria from 300 old human mummies due to M. tuberculosis ca